title: [Effects of oral dydrogesterone on clinical outcomes of frozen-thawed embryo transfer cycles].
abstract: OBJECTIVE
  To investigate the effects of oral dydrogesterone for luteal phase support after frozen embryo transfer (FET) cycles on the clinical outcomes.
  
  
  METHODS
  A total of 1643 FET cycles in our center between January, 2010 and September, 2011 were analyzed. The patients were divided into group A with natural-cycle FET and group B with hormone replacement cycle (HRT-FET). The two groups were further divided into two subgroups to receive oral dydrogesterone (groups AI and BI, n=358 and 185, respectively) or intramuscular progesterone with progynova (groups AII and BII, n=634 and 466, respectively) as luteal phase support. The clinical pregnancy rates, implantation rates, early miscarriage rates, ectopic pregnancy rates, ongoing pregnancy rates and delivery rates were compared between the subgroups.
  
  
  RESULTS
  There were no significant differences in the clinical outcomes between the patients receiving dydrogesterone and intramuscular progesterone as luteal phase support in either natural-cycle FET or HRT FET (P>0.05).
  
  
  CONCLUSIONS
  In the FET cycles, oral dydrogesterone tablets for luteal support can achieve good clinical outcomes comparable with those by intramuscular progesterone and serves as a good alternative for luteal phase support.
authors.affiliation: Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. guowei20511055@163.com
authors.forename: Wei
authors.initials: W
authors.lastname: Guo
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
authors.forename: Desheng
authors.initials: D
authors.lastname: Ye
authors.forename: Yuxia
authors.initials: Y
authors.lastname: He
authors.forename: Pu
authors.initials: P
authors.lastname: Li
authors.forename: Jing
authors.initials: J
authors.lastname: Niu
authors.forename: Xinhong
authors.initials: X
authors.lastname: Yang
authors.forename: Yan
authors.initials: Y
authors.lastname: Tang
authors.forename: Shiling
authors.initials: S
authors.lastname: Chen
mesh_terms: D000284:Administration, Oral; D000328:Adult; D004394:Dydrogesterone / Q000008:administration & dosage / Q000494:pharmacology*; D004624:Embryo Transfer / Q000379:methods*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology
chemical_list: D011374:Progesterone; D004394:Dydrogesterone